Sucker-rod elevator



c. M. MARSHALL.

SUCKER ROD ELEVATOR. APPLICATION FILED SEPLZ, 1920- 1,414,5 1 9. Patented May 2, 1922.

IN VEN TOR.

ATTORNEYS,

entree STATES PATENT OFFICE.

CHILTON M. MARSHALL, OF OAKDALE, LOUISIANA, ASSIGNOR OF ONE-HAIJF TO B. E.

POWELL, F ELTON,'LOUISIANA.

suoxnaaon ELEVATOR.

am s-19g.

To all whom it may @mm.- 1 7 V Be it known that I-,CHILT01 -I M. MARSHALL, a citizen of the United, .States,'residing at Oakdale, in theparish of Allen andState of V Louisiana, have invented certain new and useful Improvements in a Sucker-Rod Elevator, of which the following is aspecification. v

This invention relates to new and useful 10 improvements in a sucker-rod elevator.

One object of the invention is to provide an elevator of the character described which has been specially constructed for the'purpose of lowering sucker-rods into wells and withdrawing them therefrom. As is well known to those familiar with the art of drilling and pumping wells, a sucker-rod is employed for operating the pump down in the well. This rod is made up of a number of joints which are threaded together. In pulling the rod from the well the joints are successively unscrewed and set aside until the entire rod is withdrawn, and in making up the sucker-rod to let it down into the well the joints'are screwed together, one at a time as the rod descends. During these operations the rod may be suspended in the bore by means of theelevator herein described which constitutes'a much more simple, safe and efficient means than methods now employed for this purpose. The construction of the joints of sucker-rods is also well known, but it may be here explained that the abutting ends of the joints are enlarged, forming heads, one of which is formed with a reduced outwardly threaded nipple which screws into an internally'threaded socket in the adjacent end of the adjoining joint, and the elevator is clamped around the joint underneath the 40 head at the upper end thereof and'thereby holds the string suspended.

Another object of the invention is to provide an elevator of the character described which is light and simple in construction and which may be easily manipulated to disengage it from thejoint and apply it to the next succeeding joint above, when the rod is being lowered, or to the next succeeding joint below when the rod is being elevated. With the above and other objects in view the invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification and Application filed September 2, 920, Serial No. 407,725.

' illustrated in the accompanying drawings,

wherein: Y c I F gure l'lS a side elevation of the elevator. Figure 2 shows a plan view of the engaging jaw e'mployed, showing in fragmentary Specification of Letters Patent. Patented BIay- 2, 1922.

section the fork (to which said jaw is attached Figure 3 shows a side view of a sliding collar employed, and I j Figure 4 shows a side elevation of the actuating lever. V i Referring now more particularly to the drawings wherein like numerals of reference designate similar parts in each of the figures, the numeral 1 refers to the shank of the supporting fork whose lower end branches into tne spaced prongs 2, 2. The lower ends of these prongs have bearings 3, 3, and between them is located the U-shaped jaw 4. Formed integrally with this jaw are the opposing spindles 5 and 6 which are rotatable in the respective bearings 3 and which support the jaw in the forks. The spindle 6 is somewhat longer than the spindle 5, providing a space between one side of the jaw sand the corresponding prong 2, and slid-ably mounted on this elongated spindle there is a collar 7 which has a peripheral groove 8. The side .Iof this collar, adjacent the jaw 4:, has a laterally extending pin 9 which works through a bearing 10 in the adjacent side of the jaw. Pivoted to the corresponding prong 2 there is a manual lever 11. The lower end of this lever 1S bifurcated forming the fingers 12, 12 which fit into the groove 8 and there is a flat spring 13 which is secured at one end to the shank 1 and its other endpresses against the upper end of the lever 11 and thus normally holds the pin 9 projected through its bearing. The upper end of the shank 1 has a swivel connection to the link 14, and the ent'ue elevator is suspended by means of a suitable C-hook 15 which is connected to the link 14. This C-hook has a ring 16 to which the lower end of the cable of a block-andtackle may be attached. This block-andtackle is in common use and its operation is well known, but it maybe here stated that it j is suspended from the top of the derrickand through it the elevator may be raised and V shank 1 and this will operate to move the the enlarged head at the upper end thereof,

' from said rod.

collar 7 in the opposite direction and withdraw the pin 9. l V OVBI'ftllQjOlIllr of the sucker-rod underneath and the lever 11 is then released which will operate to project the pin across'the jaw 4 in front of the sucker-rod to prevent the disengagement of the aw therefrom. When, it

is desired to release the elevator the lever 11 is again manipulated as above'explained and! be read ly disengaged v engagement with arod, said lever-being the elevator may then Whatl claim is I a I 1. An elevator ineluding a suspending fork, formed. with prongs at one end,a1ink having a 'swivelling' connection with the other end the fork, an arcuate'jaw secured between said prongs, one arm of which hasa bearing, a "lock pin slidable through said bearing, a lever secured to one arin of said fork normally "holding the pin projected across said jaw to lock the samein engagement witha rod, said lever being" manuall The jaw is then slipped operable to withdraw the pin to permit the disengagement of the jaw from said rod.

otherjend' of the fork, an arcuate jaw secured between the free ends of said prongs, one arm ofrwhich has a bearing, a oollarslidable thereon, a lock pin slidable through said bearing, a lever normally holding the pin: projected across said jaw to lock the same in manually operable to"withdraw the" pin to perlnit'the disengagement of the jaw "from;

said rod, anda suspending means attached to v said link; i 'ln testinionywhereof I have signed my 3 presence of MARSHAIJL 

